If he is a user then Justin the junkie
What Are Some Cool Justin Bieber Usernames?
Umm try Justin_Bieber or Bieber_Justin hope I helped!
I know Jonas bros on moshi monsters.com its jobro1234 well its Kevin's wife's
Um I don't know just mix it up or something a lot of people have a justin bieber realated username good luck
hoped I helped :P
hoped I helped :P